“In heaven like a pair of lovebirds, we’d fly wing to wing; Or else on earth, as twain trees with their branches entwining. Endures the earth, endures the heaven, they shall wear away; This sorrow, however, shall endure forever and a day!” The Chinese poem “Song of Everlasting Sorrow” is based on a legend that narrates the tragedy of the romance between Emperor Xuanzong of the Tang Dynasty (AD 618-907) and Yang Yuhuan, his beloved concubine, in verse. Shanghai Grand Theater and Shanghai Ballet are co-producing “Ballet Echoes of Eternity” which is based on the poem. Patrick de Bana will be the choreographer for this production that will bring the love of an emperor closer to modern society. The stars from Shanghai Ballet will demonstrate the poetic love and painful sorrow through contemporary ballet dance.